nodal form of mastopathy or breast cancer any cancer except non-melanoma skin cancer stroke or myocardial infarction chronic renal failure II-III chronic hepatic failure II-III liver cirrhosis chronic heart failure IIa-III exacerbation of chronic stomach or duodenal ulcer obesity (BMI >30 kg/m2) alcohol abuse uncontrolled arterial hypertension (systolic blood pressure > 160 mmHg, diastolic blood pressure > 90 mmHg) current cigarette smoking (>10 cigarettes a day) diabetes mellitus deep vein thrombosis or pulmonary embolism